<?php

namespace app\api\controller;
use app\common\model\Enum;
use app\api\model\HttpMachine;
use app\api\model\User as UserModel;
use think\Db;
use think\facade\Cache;
use think\facade\Validate;
use think\facade\Request;

/**
 * 用户管理
 * Class User
 * @package app\api
 */
class Sme extends Controller
{
 
    public function index()
    {
       
      $ch = 'AA--0302030351FB55';
      $i = ord($ch);
      var_dump($i);
      
      $i = 65;
      $ch = chr($i);
      var_dump($ch);
        
      echo $this->encode("我")."<br/>";

        exit();
    }


    public function index222()
    {
        $machineNo = Request::param("id");
        // echo hexdec("AA03030f00367755"). "<br>";
     //echo hexdec("AA 03 03 0f 00 36 77 55"). "<br>";

        // echo hexdec("AAH"). "<br>";
        $var = "nÖ§9q1Fª£ˆæÓ§Œ_»—Ló]j";

        for($i = 0; $i < strlen($var); $i++)
        {
           echo ord($var[$i])."<br/>";
        }
        
      //$str = bin2hex("00 01 02 03");
      // echo $str. "<br>";
      echo hexdec("AAH"). "<br>";
        // $str = "03020200";
        // $s2 = $this->crc16($str);
      echo dechex(255). "<br>";

        $data = '03 02 02 00';
        $s2 = $this->crc16($data);
        echo $s2. "<br>";
        exit();

    }

    private function crc16($data)
    {
        $data = str_replace(' ','',$data);
        $data = pack('H*', $data);
        $h = 0xFFFF;
        for ($i = 0; $i < strlen($data); $i++) {
            $h ^=  ord($data[$i]);
            for ($j = 0; $j <8; $j++) {
                $lsb = $h & 0x0001;
                $h >>= 1;
                if ( $lsb  == 1) {
                    $h ^= 0x8408;
                } 
            }
        }
        $h ^= 0xffff;
        $tmp =  strtoupper(dechex($h));
        return $this->str_insert($tmp,2," ");
    }

    private function str_insert($str, $i, $substr)
    {
      $startstr="";
      $laststr="";
      for($j=0; $j<$i; $j++){
        $startstr .= $str[$j];
      }
      for ($j=$i; $j<strlen($str); $j++){
        $laststr .= $str[$j];
      }
      $str = ($startstr . $substr . $laststr);
      return $str;
    }



    function decode($str, $prefix="&#") {
      $str = str_replace($prefix, "", $str);
      $a = explode(";", $str);
      foreach ($a as $dec) {
        if ($dec < 128) {
          $utf .= chr($dec);
        } else if ($dec < 2048) {
          $utf .= chr(192 + (($dec - ($dec % 64)) / 64));
          $utf .= chr(128 + ($dec % 64));
        } else {
          $utf .= chr(224 + (($dec - ($dec % 4096)) / 4096));
          $utf .= chr(128 + ((($dec % 4096) - ($dec % 64)) / 64));
          $utf .= chr(128 + ($dec % 64));
        }
      }
      return $utf;
    }
    /**
     * 将字符串转换为ascii码
     * @param type $c 要编码的字符串
     * @param type $prefix 前缀，默认：&#
     * @return string
     */
    function encode($c, $prefix="&#") {
      $scill="";
      $len = strlen($c);
     
      $a = 0;
      while ($a < $len) {
        $ud = 0;
        if (ord($c{$a}) >= 0 && ord($c{$a}) <= 127) {
          $ud = ord($c{$a});
          $a += 1;
        } else if (ord($c{$a}) >= 192 && ord($c{$a}) <= 223) {
          $ud = (ord($c{$a}) - 192) * 64 + (ord($c{$a + 1}) - 128);
          $a += 2;
        } else if (ord($c{$a}) >= 224 && ord($c{$a}) <= 239) {
          $ud = (ord($c{$a}) - 224) * 4096 + (ord($c{$a + 1}) - 128) * 64 + (ord($c{$a + 2}) - 128);
          $a += 3;
        } else if (ord($c{$a}) >= 240 && ord($c{$a}) <= 247) {
          $ud = (ord($c{$a}) - 240) * 262144 + (ord($c{$a + 1}) - 128) * 4096 + (ord($c{$a + 2}) - 128) * 64 + (ord($c{$a + 3}) - 128);
          $a += 4;
        } else if (ord($c{$a}) >= 248 && ord($c{$a}) <= 251) {
          $ud = (ord($c{$a}) - 248) * 16777216 + (ord($c{$a + 1}) - 128) * 262144 + (ord($c{$a + 2}) - 128) * 4096 + (ord($c{$a + 3}) - 128) * 64 + (ord($c{$a + 4}) - 128);
          $a += 5;
        } else if (ord($c{$a}) >= 252 && ord($c{$a}) <= 253) {
          $ud = (ord($c{$a}) - 252) * 1073741824 + (ord($c{$a + 1}) - 128) * 16777216 + (ord($c{$a + 2}) - 128) * 262144 + (ord($c{$a + 3}) - 128) * 4096 + (ord($c{$a + 4}) - 128) * 64 + (ord($c{$a + 5}) - 128);
          $a += 6;
        } else if (ord($c{$a}) >= 254 && ord($c{$a}) <= 255) { //error
          $ud = false;
        }
        $scill .= $prefix.$ud.";";
      }
      return $scill;
    }


}

